A New Break-out Harness Is Used for the Fuel Control Module on C175 Off-Highway Truck Engines {1403, 1408}
- Off-Highway Truck:
- 793F (S/N: SND1-UP; SSP1-UP)
- 795FSeries AC (S/N: ERM1-UP)
- 797F (S/N: LAJ1-UP)
Description of Change: The new break-out harness is used because of a change in the power supply to the fuel control module. Electrical power to the fuel control module is now routed through the engine electronic control module (ECM). The engine ECM limits the voltage to the fuel control module.
The improvements reduce the possibility of activating the 18-9 Abnormal Update Rate diagnostic code.
Adaptable To: The new 365-5949 Engine Harness As replaces the 330-0149 Engine Harness As
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| Effectivity for the 365-5949 Engine Harness As |
| S/N:SSP00419 |
| S/N:SND00106 |
| S/N:LAJ00296 |
Installation of the 365-5949 Engine Harness As
- Disconnect Y-harness (1) from fuel control module (2) and from the engine harness.
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 | |
| Illustration 1 | g02721527 |
(1) Y-harness (2) Fuel control module (3) Suppression module | |
- Remove the Y-harness and suppression module (3). Also remove the hardware for the suppression module.
- Connect new harness (4) between the fuel control module and the engine harness. Secure the new harness.
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| Illustration 2 | g02721528 |
(4) 365-5949 Engine Harness As | |
- Turn the truck keyswitch On. Verify that there is no active 18-9 Abnormal Update Rate diagnostic code.
- Start the truck in order to verify the success of the new harness.
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